Broadband polarization degeneracy of guided waves in subwavelength structured ZnO pattern

Oleh Y. Yermakov* (Invited author), Andrey A. Bogdanov (Invited author), Andrei Lavrinenko (Invited author)

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Polarization degeneracy of electromagnetic plane waves in vacuum and in any bulk isotropic media is the keynote operational principle of many optical devices such as polarizers and interferometers. However, surface and guided waves spectra are typically either not degenerated at all or meet degeneracy only at very specific dispersion points. In this work, we offer a design of a periodic photonic structure based on zinc oxide (ZnO) nanocylinders providing the broadband polarization degeneracy of the guided waves in the near-IR frequency range. We analyze the impact of the spatial dispersion and substrate on the degeneracy breaking. We offer the design based on ZnO nanocylinders with aluminum-doped zinc oxide (AZO) substrate, achieving the degeneracy in the vicinity of a telecommunication wavelength, for the practical implementation. Finally, we propose and verify numerically a potentially important device - waveguide polarizer, which is the analogue to the <formula><tex>$\pi$</tex></formula>/4 plate for the guided waves.

Original languageEnglish
Article number8200307
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume25
Issue number3
Number of pages7
ISSN0792-1233
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Aluminum-doped zinc oxide
  • Degeneracy
  • Dispersion
  • Guided waves
  • II-VI semiconductor materials
  • Nonlocality
  • Optical surface waves
  • Periodic structures
  • Polarization
  • Telecom
  • Zinc oxide

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